Confidence: Medium · Source: FCC ULS · As of 2026-09-14
KN9FOO callsign genealogy
Currently held by Kirkman, William A
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by KN9FOO's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KN9FOO.
No current licensee on record previously held this callsign.